<template>
  <div class="articleDetail">
    <!-- Header 区域 -->
    <van-nav-bar
      fixed
      title="文章详情"
      left-arrow
      @click-left="$router.back()"
    />

    <!-- 文章信息区域 -->
    <div class="article-container">
      <!-- 文章标题 -->
      <h1 class="art-title">{{ artObj.title }}</h1>

      <!-- 用户信息 -->
      <van-cell center :title="artObj.aut_name" :label="artObj.pubdate">
        <template #icon>
          <img :src="artObj.aut_photo" alt="" class="avatar" />
        </template>
        <template #default>
          <div>
            <van-button
              round
              color="#c00000"
              type="info"
              size="mini"
              v-if="artObj.is_followed"
              @click="followedFn(false)"
              >已关注</van-button
            >
            <van-button
              v-else
              round
              color="#c00000"
              icon="plus"
              type="info"
              size="mini"
              plain
              @click="followedFn(true)"
              >关注</van-button
            >
          </div>
        </template>
      </van-cell>

      <!-- 分割线 -->
      <van-divider></van-divider>

      <!-- 文章内容 -->
      <div class="art-content" v-html="artObj.content"></div>

      <!-- 分割线 -->
      <van-divider>End</van-divider>

      <!-- 点赞 -->
      <div class="like-box">
        <van-button
          round
          color="#c00000"
          icon="good-job"
          type="danger"
          size="small"
          v-if="artObj.attitude === 1"
          @click="loveFn(false)"
          >已点赞</van-button
        >
        <van-button
          round
          color="#c00000"
          icon="good-job-o"
          type="danger"
          plain
          size="small"
          v-else
          @click="loveFn(true)"
          >点赞</van-button
        >
      </div>
    </div>
    <!-- 文章评论区域 -->
    <CommentList :isCollected="artObj.is_collected"></CommentList>
  </div>
</template>

<script>
import {
  getArticleDetail,
  followedUserAPI,
  unFollowedUserAPI,
  articleLikeAPI,
  articleDisLikeAPI,
} from "@/api";
import CommentList from "./CommentList.vue";
export default {
  name: "ArticleDetail",
  data() {
    return {
      aid: null,
      // 文章对象
      artObj: {}
    };
  },
  components: {
    CommentList,
  },
  async created() {
    try {
      // 显示加载图案
      this.$toast.loading({
        message: "加载中...",
        forbidClick: true,
      });
      // 获取文章详情
      this.aid = this.$route.query.aid;
      const res = await getArticleDetail(this.aid);
      this.artObj = res.data;
      // 关闭加载图案
      this.$toast.clear(); 
    } catch (error) {
      this.$toast.clear();  // 关闭加载图案
      this.$toast.fail("文章详情获取失败！");
    }
  },
  methods: {
    // 关注用户-取消关注
    async followedFn(bool) {
      // console.log(val);
      if (bool) {
        // 业务: 关注用户
        // 显示: 已关注按钮
        try {
          this.artObj.is_followed = true;
          await followedUserAPI({ target: this.artObj.aut_id });
        } catch (error) {
          this.$toast.fail("关注作者失败！");
        }
      } else {
        // 业务: 取消关注用户
        // 显示: 关注按钮
        try {
          this.artObj.is_followed = false;
          await unFollowedUserAPI(this.artObj.aut_id);
        } catch (error) {
          this.$toast.fail("取消作者失败！");
        }
      }
    },
    // 文章点赞-取消点赞
    async loveFn(bool) {
      if (bool) {
        // 业务 => 点赞文章
        // 显示 => 已点赞按钮
        this.artObj.attitude = 1;
        await articleLikeAPI({ target: this.aid });
      } else {
        // 业务 => 取消点赞文章
        // 显示 => 点赞按钮
        this.artObj.attitude = -1;
        await articleDisLikeAPI(this.aid);
      }
    },
  },
};
</script>

<style lang="less" scoped>
.article-container {
  padding: 10px;
  margin-top: 46px;
}
.art-title {
  font-size: 16px;
  font-weight: bold;
  margin: 10px 0;
}

.art-content {
  font-size: 12px;
  line-height: 24px;
  width: 100%;
  overflow-x: scroll;
  word-break: break-all;
  /deep/ img {
    width: 100%;
  }
  /deep/ pre {
    white-space: pre-wrap;
    word-wrap: break-word;
  }
}

.van-cell {
  padding: 5px 0;
  &::after {
    display: none;
  }
}

.avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background-color: #f8f8f8;
  margin-right: 10px;
  border: none;
}

.like-box {
  display: flex;
  justify-content: center;
}
</style>
